43430434331 has 4 divisors (see below), whose sum is σ = 43670381664. Its totient is φ = 43190487000.

The previous prime is 43430434309. The next prime is 43430434357. The reversal of 43430434331 is 13343403434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13343403434 = 2 ⋅6671701717.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43430434331 is a prime.

It is a super-2 number, since 2×43430434331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43430434381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119973395 + ... + 119973756.

It is an arithmetic number, because the mean of its divisors is an integer number (10917595416).

Almost surely, 2^43430434331 is an apocalyptic number.

43430434331 is a deficient number, since it is larger than the sum of its proper divisors (239947333).

43430434331 is a wasteful number, since it uses less digits than its factorization.

43430434331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239947332.

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 43430434331 its reverse (13343403434), we get a palindrome (56773837765).

The spelling of 43430434331 in words is "forty-three billion, four hundred thirty million, four hundred thirty-four thousand, three hundred thirty-one".